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How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
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Plot two graphs in same plot in R
I would like to plot y1 and y2 in the same plot.
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How do I find the last occurrence of a substring in an NSString?
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What characters are valid for JavaScript variable names?
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Escape single quote character for use in an SQLite query
...abases expect it that way), so it would be :
INSERT INTO table_name (field1, field2) VALUES (123, 'Hello there''s');
Relevant quote from the documentation:
A string constant is formed by enclosing the string in single quotes ('). A single quote within the string can be encoded by putting two ...
git -> show list of files changed in recent commits in a specific directory
...es -- for details see the online manual at http://svnbook.red-bean.com/en/1.7/svn.ref.svn.c.log.html
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Entity Framework: There is already an open DataReader associated with this Command
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PostgreSQL DISTINCT ON with different ORDER BY
...approaches:
The general solution that should work in most DBMSs:
SELECT t1.* FROM purchases t1
JOIN (
SELECT address_id, max(purchased_at) max_purchased_at
FROM purchases
WHERE product_id = 1
GROUP BY address_id
) t2
ON t1.address_id = t2.address_id AND t1.purchased_at = t2.max_pur...
What are the main purposes of using std::forward and which problems it solves?
...orwarding, std::forward is used to convert the named rvalue references t1 and t2 to unnamed rvalue references. What is the purpose of doing that? How would that affect the called function inner if we leave t1 & t2 as lvalues?
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